Lump under jaw/gill

[randybal]

My juvenile axolotl has a lump under its jaw/gill. I just noticed it today. I look at them pretty extensively, and haven’t noticed it previously, so I believe it is very new. It seems to be behaving normally in its tank, and is eating. Any help with this would be amazing. Wanna figure it out before it’s too much of a problem. Attached 2 photos, please let me know if they work.

 

[KumquatSquats]

Can you see if there's an obstruction in the throat? The bottom of the gills open up into the throat so something could have gotten stuck in the space between